I get a big kick from the ingenuity and imagination of users in the VC threads. I greatly admire such efforts and in no way have any interest in discouraging them. I myself got some needle files early on and and notched the grooves of my M17 tip to slightly increase airflow, tho I have not done so with my M18 tip.
That being said I would like to remind folks that there is a great deal of engineering in the VC design and quite a bit of research and testing, including that which we have provided as users, and while over time the tips have continued to be developed and improved, there has been no (or little) attempt to radically increase the airflow in the tips. I think the reason for this is most likely that by increasing airflow we reduce the amount of time the air is in close proximity (and under pressure?) to the hot cap (and to what ever degree the tip) where the heat is coming from therefore reducing vapor production. The cap is less than an inch (+/- 15mm), after all, and not a very long path for air to flow and get hot.
You each can evaluate the effectiveness of your mods and how well they improve your experience, but that I think is what increasing airflow too much might result in and what you need to watch for in trying to make hitting a VC easier.
Just thinking out loud...
) but if you don’t have the right tools at home then no amount of tips or tricks are going to help you. I mean, what do you wanna hear?
on the rotary tool solution and the recommendation of cleaning before sucking! I’m forever leaving out the little parts that’ll get a person killed, you might have just saved a life. Bravo! 
Fact is, I can take looong draws - like inhaling and not as a cigarette type of draw - from my modded ss tip to get really big hits. But that is not necessarily what I want all the time.
Great idea! Friend, or neighbor might have a set!
